Pipe-coupling.



C. H. & H. R. LOUGHRIDGE.

PIPE COUPLING. APPLICATION FILED MAY 24, 1916.

Patented Oct. 9, 1917.

WITNESSES bracing collars.

CLYDE H. LOUGI-IRIDGE AND HOWARD R. LOUGHRIDGE, VANIA.

PIPE-countries.

Specification of Letters Patent.

or rrr'rsnunen, PENNSYL- Applieation filed May 24, 1916. Serial No. 99,481.

To all whom it may concern: 7

Be it known that we, CLYDE-H. LOUGH- moon and HOWARD R. Louonnroen, citizens of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Pipe- Couplings, of which the following is 'a specification.

Our invention relates to improvements in couplings for pipes, or pipe unions, as they are commonly called, and the principal object is to provide means for rigidly. connect ing together the ends of adjacent pipe sections, in conduits for wires, quick and eflicient manner.

We utilize pipe ends having external annular channels and shoulders, embracing collars having co-acting interfitting internal annular abutments fittedto the channels in: the pipe ends, or otherwise secured to the pipes, and outer encircling embracing members in threaded engagement with each other and in positive shouldered engagement with.

the embracing collars.

Preferred forms of the invention are.

shown in the accompanying drawings, in wh1ch- Figure 1 shows the channels and shoul-- ders on adjacent pipe ends. Fig.2 is a partial section showing the pipe ends of Fig. l with one of the members of the pair of collars fitted on each pipe. end, and; the embracing members loosely mounted on the pipes in disassociated position.-

Fig. 3 is a complete vertical section of the parts shown in Fig. 2, but with the pipes rigidly coupled and all parts in normal fixed position. 1

Fig. 4 is a vertical section showing a modification adapted to couple a multithreaded pipe to the ordinary threaded pipe.

Fig. 5 is an end view of a pair of the em- Fig. 6 is a sectional detail view showing an integral holding ring threaded on the end oflthe pipe. r

Fig. 7 is a perspective detail viewshowing an integral ring cut away atone side for insertion over the shouldered end of the 1 e. 1 p l ln connecting up sections of metal piping for wire conduits and the like, there is ordinarily great loss of time, and expensive etc., in an easy,-

work, in cutting threads on the ends of the pipes, andjoining them up with ordinary threaded coupling links. This is especially true where the pipe has to be cut a great many times on the job.

Each time a'cut is made aset ofthreads has to be turned on the ends. We provide means for cutting the pipe and simultaneously cutting a circular channel in eachend -th ereof. By fitting a co-acting pair of semi-circular collars having flanges onto the ends, and drawing these to gether by threaded enveloping sleeve mem-T bers, we are enabled to do all of the threads ing at: the factory, and so save a great deal of time and expense. The collars and sleeves may be cast, or made by machinery in quantities very cheaply.

Referring to the drawings, the pipes 2,

which'are to be coupled, are providedeach with an encircling groove 3, a short distance from. its end. This groove provides a shoulder 4 on. the pipe end. A pair of round half-rings 5, 5, having interior ridges or shoulders 6, adapted to fit in the grooves 3, embraces the end of each pipe. The

members 5 are of proper length to reach just to the ends of thepipes, when properly fit ted 1n thegrooves, so that their ends and the pipe ends are-gin the same transverse plane, thereby providing for a square abutment of such parts and a more rigid cou pling. A washer 7 may be fitted between the pipe ends where a fluid-tight connection is desired. I

l/Ve provide amale sleeve member 8 and a female sleeve member 9, each of interior bore sufiicient to slip easily over the pipe ends and thereon beyond the grooves 3. After this the pairs of'half rings 5 are fitted into position with the shoulders in the grooves, and the sleeve members advanced over the collar members and overlapping the joint. Threads are provided on the outside of the sleeve member 8 and inside the member 9.

These sleeve members have two interior bores, one just large enough to fit over the pipe, the other larger, providing ashoulder 10.' As the sleeve members are engaged and threaded together, the shoulders 10 positively engage the rings 5, the outer ends of which forman abutment for the shoulders 10. When the sleeve 'members are drawn Patented Oct. 9,1917.

embracing tightly together-pin the position shown in Fig. 3, the shoulders 10 have positively enge r n fo e e th m. n t e PlP ends, tightly together, end to end.

It will be observed that by the construction shown the male sleeve member when slipped down over the collar members, which it engages rather closely, holds 7 the pipe inproper alineinent while the other sleeve member is being screwed into place to locate the joint. This is a great convenience in actual laying cf the pipes.

, cient.

The ends of the pipes. fit together andthe interiors form continuous, smooth conduit.

it will be observed that the locking action of: the parts is positive in every detail,- and there is. no chance for wearing loose, or for play in the parts.

5111 Fig. 4, we show a. modified constructionin which the collar member 5 is the same as: in. the above described form.

The male. sleeve member S -is shortened so as. not to. incase theother. pipe end. :The female sleeve member tl has its larger bore threadedto engage the enlarged-threaded portion of memberfifland its smallerabore istliesame sizeas that, of the pipe 2. Female member 9 which isscrewed onto mem ber S forms .av continuation oi. the pipe by itsreduced extended threaded portion 11 and is adapted to be'joinedto an ordinary threaded pipe section 2 by the usual threaded sleeveunion 1.2. By this modification we can readilyconnect one oi our grpoved pipe ends to the ordinarily threaded pipe ends with the standard threaded sleeve union.

in. Fig. 6 we show; further. modification in which-th pipe section 2 when already provided with a threaded terminal, may be utilized with-the end of another-pipe constructed as above described by using an ordinary threaded ring, thereby: forming an abutment :ior engagement with the inclosing connecting .me'mber 9 of I either male or female form.

lf desire d, the two-partrings 5 may be madein one piece, as-shown inFig. 7,.by cutting: the ring 5 away at one sidefor the major portion ot its circumference, as indicatedat 13 A-partial retaining collar 01*,abutmentengagingshoulder 6 of sufiicient width to embrace a substantial portion of the annular butmen @h P VlQ QL h le allew for easy manipulation of the rmg angularly across the end of the pipe.

llhe many advantages and uses of our device Wlll be apparent to those tannhar .with the art.

. each havinganannular shouldered groove and a divided embracing collar havinginternal abutmentseo acting withthe shouldered grooves, sleeve couplings overlapping the pipe joint and embracing said collars having interior shoulders positively engaging the, ends. of the collars and in threaded engagement ..with each other, and a ring washer. intervening; between. the. inner ends of the pipes and collars respectively.

2. In a device of the class describechthe: combination with adjoining sections ,ofa conduit. pipe having; annular channels near their ends, of sectional collar -meinbers adapted to-encircle the-pipe ends and having interior 1 flanges engaging the channels, of a male sleeve member slidably mounted-011 one pipe end havingan interior. boreadaptecl1to .e111bi'ace; the pipe, and a larger .bore adapted/to. pass over thecollanmembers, the junetion.01.the bores formingea;shoulder adapted .to engage the collar .ineniber, and a female sleeve on: the other pipe .end' having a smaller. interior .bore adapted. to. embrace the.pipe.encl,..a l.arp;er,,bo. re. adapted. telembraice th emalegsleeve. .member,.. a shoulder. at the junction of the boresadapgted tosengage the collar member,. and threads on the'sleeve members whereby they are..enga,9;ed;

8. In a coupling of the class described, the combination with adj acent pipe sections having annular channels; near .their .ends, of sectional collarsadaptedto embrace said pipes: between. their. meeting ends and said chann el s and having interiorvflanp'es adapts ed towengage the channels in: the pipes, a male sleeve lnelnberfslidably mounted on one. pipe endnhavingzani interior bore adapted to, embrace the -.pipe,.,and..a larger bore adapted to embracethe.collar members on both pipe ends, and a female. sleeve men. ber ,niountedr on the nether pipe end ,and adapted to engage said male member.

:4. n1 a coupling of. the class described, the combination with adjacent pipe ,sections having annular channelsnear their ends, of sectional.collarsadapted to embrace said pipes; between their meetingends and said channels and having interior :"flanges adapted to. engage the channels in the pipes, and sleeves. slidably mounted. on: the pipes having ,interior shoulders adapted .to engage the collars, one sleeve being adapted to pass. over both .of said. collarsand screw into the other, and bothv sleeves overlapping the. pipe joint when; in engaged, position,

5. In a device of the class described, the combination with adjoining sections of a conduit pipe having annular channels near their ends, of sectional collar members adapted to encircle the pipe ends and having interior flanges engaging the channels, of a male sleeve member slidably mounted on one pipe end having an interior bore adapted to embrace the pipe, and a larger bore adapted to pass over the collar members, the junction of the bores forming a shoulder adapted to engage the collar member, the length of the portion having the larger bore being sufficient to cover one pair of said collar members and a portion of the other pair, and a female sleeve on the other pipe end having a smaller interior bore adapted to embrace the pipe end, a larger bore adapted to embrace the male sleeve member, a shoulder at the junction of the bores adapted to engage the collar member, the length of the portion having the larger bore being sufficient to overlap one pair of said collars and a portion of the other pair and the major portion of the male sleeve member, and threads on the sleeve members whereby they are engaged in the portion overlapping the pipe joints.

In testimony whereof We hereunto affix our signatures in the presence of two Witnesses.

CLYDE H. LOUGHRIDGE. HOWARD R. LOUGHRIDGE. Witnesses:

W. A. HEOKMAN, C. M. CLARKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D, 0. 

